I have the pacesetter shorties...they're decent. They were a little extra work (but whaddaya expect for $289?). The hole for the O2 sensor wasn't big enough, so I had to file that out some...plug access isn't too bad...equal to or better than stock manifolds. Except plug #7, if you use regular-length plugs you have to pull the header to change the plug . I used the bolts and gaskets that came with it...they don't leak at the heads. The collector/y-pipe joints leak a little, I hafta work on that. Not sure if it's actually the gaskets, or the fact that the poly-lock nuts melted and everything loosened up.