I was looking on OGTS at the cam setups they have because when I return from deployment I wanted to overhaul the engine on my GT, while looking at the cam setups they said hydraulic or solid lifter grind and I thought, hey I don't even know if I have solid or hydraulic lifters. I've owned my GT for almost 20 years now, but due to being in the Navy and constantly moving it's been in storage for close to 18 of those 20. I have a 1970 GT, but I don't know if it's the solid lifter, 3 bearing cam, flat top piston, or low comp. pistons, 4 bearing cam and hydraulic lifters. (Probably because I didn't know of this GREAT website back then!) So, my question is, if I do have the solid lifter setup, is there any reason I can't go with a hydraulic grind cam and hydraulic lifters? I searched the message board, but didn't find anything that would confirm my suspicion that it wouldn't be a problem. Thanks for your help!