I know this has been gone over numerous times, but it is all still new to me and I want to have a thread specific to my intentions. I am installing a set of gt40p heads on my otherwise stock 302. It is the HO motor so it has the HO cam in it with the hydraulic lifters. I am also swapping out the upper and lower intake with the one I have on the same Explorer engine I am pulling the heads off of. So having done some research on this I tend to run into A LOT of conflicting information and all of it seems to be from around 3-4 years ago. I already have the Explorers engine with everything still attached... like alternator, a/c pump, etc etc.. including the TB, Headers, etc. I planned on using the headers, the push rods, etc, and buying new valve springs and lifters (lifters due to a possible issue with the current ones in the original Mustang 302). Valve springs because everyone seems to think they will be too weak. I am just looking for someone to point me in the right direction on this. I am not building a "Monster" or a "race car". This thing is going to be all street with a little more pep in her step. I am limited on budget for now, but eventually down the road will upgrade to aluminum heads, new cam etc. I want to just get the best out of a stock cam, with the gt40 heads, etc. What would you do if you went this way? What valve springs, Hydraulic lifters etc? Should I keep the push rods that come with the gt40p heads off the explorer, or replace them with the ones out of the Stang? Both engines have comparable mileage, 109k on the 1988 fox body and 115k on the 97 Explorer. I keep reading that stock headers will fit with a little switch up of the plug wires and/or shorty plugs.. I'll mess with that when the time comes. First things first is getting this thing back together in proper running condition.