Wow sounds like you have a great running engine. I was going to build a 13.1 compression 360 stroked to 426 cubic inches. But huges engines said they didn't know when they were going to get more cranks in. So I ended up buying a 397 stroker gen3 hemi engine kit. Now just need about $3000 to get it built.lol i think I picked the wrong time to build a engine. Lol I need to get the torque converter pulled out and sent off to get redone.