New rally engine advice

[Bling]

Yeah probably A. Other options sound like too much work / not worth it. Just make what you have as angry as possible

[4agtepwr]

If you put a blacktop head on a silvertop with silvertop pistons you will fail, it will have less comp than a stock silvertop

[Boost_4_Life]

So, this should really be in the project thread. But car is going on the dyno again this Friday, new 4-2-1 extractors, and t3 trumpets + pipercross filter. Place your bets, how much power will I loose from the 99kw made last year