Yes it would need to be cut, also it would need to be with something that will allow the product to flash at lower temps.
Big car preps need quite some heat to flash and really bring the tack out.
I haven't tried the Red Monster preps as I have had good success with Monster Grip preps and don't...
A lot (not all ) of the preps sold for the RC drag cars actually is blended with/from the big car stuff.
Using straight big car prep might be a too strong and you'll start burning esc's, stripping spurs etc. especially once a groove starts forming.
I have tried some homemade stuff but it just...