Money isn't the issue. I've got a slush fund from wrapping steering wheels and selling other spares that will fund it without the wife finding out how much I "invested" in this project. I do like a return on my "investment" though. I was looking at the cost matrix between finishing the 350 or going to the big block. I like the 350 4 speed and it will be even better with the M23Z, BUT (big BUT) it would be a blast with a mild 455. Only you guys would know that the 350 breather actually hid a 455. Folks around here think I only have one Buick since they are both red. The fact one is stick and one is auto, one is winged and one is plain, one is half vinyl top and one is hardtop doesn't seem to phase them until they see them side by side. I can spiral out of control and came close to buying a set of TA heads, forged pistons and rods to make it really sing. Buying new solves a lot of machine work issues I'm having. It's a stick car so my biggest hinderance was the 3.08 rear gears with the original M21. When I swapped to the M20, it got a lot better but after 90K, the clutch was already pretty worn down. I've got the M23Z and haven't actually had it in the car but I know that it will really wake the 3.08s up with the 2.98 first gear. It will launch like 4.10s compared to 1st in the M21. I know it will be fun but my patience is wearing thin when that 455 is begging for some love. The only reason I pulled the 455 was because I was too lazy to put my Edelbrock heads on it. I bought a short block and built another motor to avoid undue down time with a head swap. It is easier to swap motors than change heads in the car for me. That is why I pulled the motor, to get the manifolds off for a header install. Since it was out, I was going to regasket. Now that it is apart, I want to make it as reliable as possible with a little freshening at 92K miles. It definitely needs a new cam, lifters, clutch and pressure plate. While they still were running, they were definitely past the best used by date. The rest of the motor is looking pretty good. Even that wasn't the greatest. I had better luck with my cheap digital caliper. At least it gives repeatable results. The bore gages were the worst. They would loosen up when you tightened them. The locking mechanism was terrible. There was no easy way to get it tight enough not to open but not so tight it could be rolled into the bearing and easily size it.