Jerome,

I had a 292 and swapped to a 4200 and would do it again in a heartbeat.

Don't know if you plan on driving the vehicle much but the 4200 will almost double the 292 fuel mileage. Its one of the reasons I got rid of the 292. 200Hp and 14mpg highway sucked. An this was a well build 292 to boot. It was used by Tom to do all his dyno pulls.

51 GMC 4.2 turbo
Can't solved today's problems using the same technology/thinking that created them