is there much work to fit these??seeing as its a popper fmic for Subaru is there any in its way??ive only ever had sr20's with fmic fitted and battery tray had been drilled for the piping,is there anything like that need doing to fit to a type r ??
also is there any noticeable gains to be had fitting a fmic??as ive read the top mount are very capable of doing there job up to 350bhp mark.this true??