I picked up a 51 Willys wagon last weekend that has had the original engine replaced with a y-block.  It is now parked at a friends house who lives in the country.  I am currently restoring a 58 Willys wagon back to original and once that is done I am going to do a restomod with the 51.  It sounds like I need to get a few numbers off of the block next time I see the y block to begin to narrow down the motor size.  Just wanted to introduce myself and will be keeping an eye on the forum for info that I can use in the future.

Dan