[poncho-mike]

I have a question about how well dates should match up on a fairly rare production car. In this case, the car is a 455HO 4-spd A-body. I bought the car minus drivetrain. Over the years, I've put together a complete motor (minus distributor) from a variety of different sources. The problem is the dates are mostly earlier than the car. I know dates on low volume cars may be wider than a higher volume production vehicle, but I'd like some input on where my dates are too far off.

Second question: If I have a WM block and a couple of SR 455 4-bolt blocks with a late 1972 and 1973 cast dates. I have a H242, a K091, a L212, and a B093. Which block would you use?

My car was shipped on 4/5/1972. I don't have the cowl wall date handy, but I will check. What date range would you expect on the following parts:

- WM block
- 7042273 carb
- 7F6 heads
- 1108436 starter
- exhaust manifolds
- M22 transmission
- 12-bolt 3.55 open rear end