Okay I have never asked a delima question like this, as I have always been exactly sure of what I wanted to do, but not now. So here goes. I am buying a good cadillac 500 engine from a guy just because the price is right and I can't turn it down. But now im going to have this caddy motor laying around. Soooooo My better half says put the caddy motor in the Blazer, but there is no way I would ever unswap my swapped in diesel in the Blazer so thats out. I thought I could put it in my tow rig, but I just have dropped in a freshly rebuilt 350 that does an excellent job of pulling, and gets better gas mileage than a 500 would. Though it would be nice to have a hot rod tow rig. Then theres my new trail truck project. S10 body on a k5 frame. Its currently got a beat 350 in it that is gonna need replacement before too long. I thought about putting the caddy motor in it, but it's gonna have a welded 10 bolt in the front and I am going for light and reliable in this rig so a 500 cid caddy motor sounds like broken parts. Also I have enough parts that I can assemble a mild reliable 350 to drop right in place of the beat one thats in there now. Theres option three of course... I keep telling myself that im not going to aquire any more projects, but I know better than that, so I could just let it be a conversation piece in the garage untill I drag up something else to put it in. I thought I would have solved my own delima after typing this all out, and I could just erase this message, but I still want your input. If you were me what would you do and why?