Wow, I am amazed at the number of replies on this one. Ok, so here is the full story that will answer some questions why I am or was considering putting this engine in my car. I purchased this 67 Firebird because it was very rust free and the price was right in my opinion ($3200). It was an original sprint ohc6 with an automatic(2 speed). The engine and trans were long gone and someone had already welded in some after thought abortion engine mounts to the sub frame but nothing that I can't grind off the welds and remove. I started aquiring the parts to restore it with an OHC6 motor and not the sprint engine because I want this car to be very drivable on todays crappy fuel. I have an eleven year old son that this car will belong to. Jacob and I will be working together over the next several years to restore it. The problem with the OHC6 plan was the parts are somewhat scarce and the cost for the items seems significantly higher than just building a small block chevy. I thought about buying a SBC engine/trans and putting that in but I wanted to keep it somewhat Pontiac. So I have this neighbor who was willing to sell me the 403 and TH350 for $500. The engine runs excellent and I was able to test drive the car. I can have any and everything I want for the engine and transmission off this car. I figured that for my sons first car we could run this low compression low horsepower motor until it dies or my son kills it and then maybe we could then cough up the big$ to do it right with a 400 or 455. I would really like to run this engine for now just because of the price and the fact it meets our needs on many levels. It sounds like its going to be a pain in the [censored] to make mount up properly. What are the opinions of doing a small block chevy? I have seen some descent deals on 350 pontiac engines or 326 pontiacs also. Any of those engines worthwhile?.....Please let me know what you guys think. Thanks Jeff