i know the lexmaul manifold with cat is expensive but does anybody think or know if they are any good what sort of gains would you expect to get from it. just i need a new cat anyway and would be good to replace the manifold as well. and also thinking about a jetex stainless cat back system 2.5" trouble is that lot would cost about a £1000 :o so cant make my mind up yet other option is still get the jetex system and get a sport cat and weld that into my standard front pipe for under £400 dunno.. what would you guys do cheers..