here is the differences between the kit and the SP1.. from the Kyosho website..
Hard alumite main chassis (not needed for performance)
The gear (LSD) it equips on the front (use the standard anyway)
Universal center shaft (nice to have, and i will prolly get them when they are on ebay)
High intensity F/R damper stay (using
www.kingheadz.com shock towers anyay)
SP brake disk (using cradock brakes)
Adjustable tie rod (got a full stainless set for the car for less than 15 bux)
SP hard upper rod (F/R) (stainless)
Adjustable S/T rod (stainless)
SPL antenna holder II (not needed "bling")
Teflon resin cutting damper piston (can get those at the hobby shop for cheap, and will do)
Lightweight spur gear (nice to have, prolly do it later)
Heat sink fin equipment high accuracy aluminum cutting alumite processing SP engine mount (not needed for performance)
High accuracy aluminum cutting mechanic POS (aluminum radio tray post.. just bling)
High accuracy aluminum cutting wing stay (same as before.. just bling)
It is low the friction finishing damper case (special shock body, can get those on ebay for cheap)
the price at RCmushroom.com is 685 for the special, and 420 for the standard
I see the difference in price.. yes.. however.. the parts that are really needed.. not really.. universals for the rear.. 25 bux.. center.. 30-35 bux.. i do see the difference.. but rather that spend the 265 extra for the SP1, i would save that 265, get the standard, and spend that 265 on parts that are needed.. for mine.. and prolly get a better kit.. personally.. however..t hat SP1 sure is nice..
This is your post up there...
The special edition 1 w/out motor that I have comes with:
1. 4mm chasis milled for the engine and center diff (my car has this, just not anodized)
2. Aluminum upgrades like the wing stay posts, radio posts, antenna mount (just bling)
3. All CVD's for front, center, and rear. (mine has dogbones center and rear)
4. Front and rear shock tower braces (mine has kingheadz shock towers now)
5. Kyosho special vented brake discs (cradock brakes 10 bux)
6. Kyosho large capacity fuel filter and fuel line (mine has the same filter and fuel line)
7. 4mm Longer teflon coated shocks (mine are not teflon coated.. will prolly upgrade to these.. shock bodies.. full set.. 30 bux)
8. Front and rear arm stabilizers (i am assuming these are sway bars, mine has them too)
9. No tires but the new style rims (puke yellow) (mine came with tires and rims in white)
10. New designed body (fits the change is steering arm location) (got that too)
11. Steering linkage is on the outside vice the inside on the Kanai's (mine has that too)
12. Center fuel guard to keep fuel from spalshing on the brakes. (mine has that too)
13. Front TCD, standard center and rear diffs with recommended oils. (came with standard in front)
14. Front hub carries have a dirt protection guard for the CVD's (mine has 22's only.. SP! comes with 20, and 22)
15. Aluminum annodized heat sink engine mounts (regular mounts in mine, no big deal)
16. Aluminum 3 shoe clutch. (mine has this too)
17. Upper and Lower arms are slightly different in design. (so are the ones in the regular kit)