Built 340 stored 22 years suggestions

So I had a 340 built 22 years ago for some drag racing in my demon but was then warned to tie the car together and cage it so it went on the back burner and I ended up building 3 other cars since. 340 forged internals .030 over venola pistons 11.0 total compression port matched heads to m1 single plane with 2.08 intakes. 590" purple shaft. Carb flowed to 972 cfm. Oiling mods etc. Harland sharp roller rockers were set on action and I would turn it over 1/4 turn every month for years. Probably has a few miles on it by now. Anyone have recommendations on prep for firing this off? Of course It has been sealed and kept it oiled but wondering if I should disassemble. 10k in this motor and that was a long time ago. I did pull a motor out of a barn that sat for years and was fresh and fired that off with no issues. Any suggestions are very welcome. What type hp should I expect with this? Thanks...