Need pulley combo help for dart 427 and magnuson 2650 and ls7 heads.

Ok I have spent lots of time reading but never joined or posted before.


My build:
Dart block 427
Cali ccw crank
Carlo I beam rods
Wiseco pistons-3.8 cc
Mamo mms265 ls7 heads with 2.23 intake valves.
Mamo cam. 237 / 253 119 + 4 .675/.675
With the .060 head gaskest and 72cc heads motor will come out to around 10.7:1
I have a new 112mm tb and ddp 112 intake
I have chris1313 dual 535 pumps and id1700 injectors.

I'm still waiting for the magnuson 2650 to show up and I'm trying to work out pulley combos
Griptec offers a 3.15 and 3.0 12 rib upper
I need to figure out the lower to get orderd.

With the comp being on the higher side car will be on e85

I have not seen a lot of data on the new magnuson 2650 let alone on ls7 heads.

Let me know your thoughts