Your results are similar to mine, a little less power but 70 more cubic inches, here a link to my build and specs for comparison.

https://board.moparts.org/ubbthreads/ubbthreads.php/topics/2864616/1.html
Block
- Keith Black aluminum RB 10.725” deck wet bock from 2014 (I think 440Jim and I were the last ones to get their blocks before they shutdown)
- Drilled lifter galley and tapped for oil restrictions
- Drilled for oil line access on top/back of block.

Heads
- B1 originals, Stage 1 hand porting by Scott Koffel, Ti Intake valves, T&D 1.7 rockers, flow 392 at .700 on Koffel’s flow bench

Intake
- B1 low deck intake with spacers

Cam
- Strange Magic solid roller 4/7 swap .767/.767 276/288 110 Lobe Sep 180 Intake centerline
- Isky EZ-Roll Solid Bushing lifters
- Jessel Belt drive

Rotating Assembly
- Callies Magnum XL 4.25” with 2.100” rod journals
- GRP Rods 7.100”
- Diamond Pistons 4.360”, gas ported, .043 rings, tool steel pins --- 13.2:1 compression ----
- Coated Clevite sbc rod and Calico coated main bearing

Carb
- APD Max Speed billet carb 1250 gas