well you could buy 60% Nitro
when I was running RC boats guys started to put 80/90 size Tuned Pips on there 60 size engines. now for your 35 you could put a 50 size tuned pipe on it. yes yes T-pipes are long if you want to run the 35 in a car. but what you can do is buy a 50 size Ducted Fan T-pipe and run the pipe forward, I say this because the Exhaust Stinger on these pipe face backwards. slick, hu.

good luck.
Jim
PS, I don't know what size pipe this one is!