Hughes hyd roller lifters

If you haven't gotten started work on the block yet I strongly suggest you get yourself a late 80's early 90s roller block (pre magnum), this will save A LOT of time and effort with doing the roller cam because that block already cam with one and corrects the geometry need for that setup. The great thing about it is that it is still an LA block!
Hughes designed them but who actually makes them I don't know. Hughes Hyd roller lifters will drop right in and be fine. I didn't have to have anything done to the lifter bores at all. As far as lifter bore height mopar was all over the place and it wasn't until the roller blocks started coming out that they got a standard going. (Wish I would have know this before I bought my 340 block, I'd have a roller block in my car now).
http://www.forabodiesonly.com/mopar/showthread.php?t=132009 Heads
http://www.forabodiesonly.com/mopar/showthread.php?t=131950 Pushrod
These two threads talk about this and I posted pictures in there so you can see what I'm talking about.
As far as RPM range, I'll have my rev limiter set at 6300 RPMs plus the fact I have an auto behind my motor it kind of limits how many rpms I can have anyway. I don't have my motor back from the machine shop yet, just waiting for the updated/fixed version of my crank scraper to come back from Florida.
http://www.summitracing.com/parts/ROS-99625/ These are the pistons I have. With my X-Heads I ended up have 9.7:1 but with to deal the is angle I bought these http://www.summitracing.com/parts/EDL-60779/ which ended up bumping my compression to 10.7:1 or 11:1 (I can't remember of the top of my head).