It's hit and miss with Texas Speed. I'd honestly compare them to the ZZP of the LSx world. Some people like them, others rub it in the dirt. I've never had an issue with them...and my old man has bought a few clutch related products from them along with a full SLP intake kit for his '02 Hurst SS. I've always bought lifters from them in their 3800 section too for an FBody when I'm building an L67 or the like. Personally never had an issue.
I've heard LMR (Late Model Racecraft) does great cam grinds, but you have to contact them. Their site really just tailors for package deals...and that means $$$$$$$$$$$$$$$$.
For the GXP...was planning on going with BTR...they seem to do pretty decent as well.
