What heads do I have?

Lots of history! My brother drag raced it with 273 and 340 CID engines from 1968 thru the early 80's. He swapped it back to a stock appearing configuration leaving only the big gaps in the fender aprons. Here's what it looked like in early '70s trim
49173117752_e41fc65681_o.jpgIMG_008 by Jim Harris, on Flickr

Also, see my avatar.

So how can ID the head part #? I thought there were supposed to be casting numbers on the intake runners? I see a number, possibly 622? The have rocker shaft oil passages - so I guess that means that the block is set-up for LA oiling. The pushrod holes are large.