BIG Turbo build planned - turbo guys!

Well guys the plan is slated - just made the last parts orders for my fox bodies SO time to gather some info on turbo'ing the 225 in my 71 Demon..

Planned -
rebuilt 225 - decked milled .010" to clean it
7.5-8.5 static compression
ported head, bigger valves, hardened seats, stiff valve springs, deck milled .010" to clean it
ARP bolts/studs through out motor
double roller timing chain
more than likely get a custom Comp solid cam for a turbo in the .450" lift range
Offy 4bbl intake
FAST EZ EFI
Spectre blower hat
MP70 or similar turbo
mild steel custom turbo mani made from 1/2" eBay flanges, Headman 3-1 collectors and a SBC DIY 1 5/8" header kit
3" down pipe, 3" mid pipe, 3" Dynomax Ultraflow, 3" Summit tail pipe, and a eBay 3" A body exhaust tip (all single (IE no single to dual piping) and driver side location)
larger intercooler (haven't picked one yet)
rebuilt A904 to handle the better part of 600hp
stock rebuilt 8 3/4 w/ 3.23 gears
Weld Prostars and 275/60 Nitto drag radials
build the chassis to handle the power and remain a street car that can drive anywhere


My many questions are -

1. can you bolt a slant 6 to a small block K member? - I'm wanting to run the QA1 tubular K member setup for a SB...

2. has anyone run a FAST EZ 4bbl EFI on a slant 6?

3. what are the power limits on the stock slant crank, block, and K1 aluminum rods? I want to run 25+psi and make north of 550hp at the crank

4. is there SFI spec flex plates, and stall converters available? Which to get?

No parts have been bought yet except the exhaust flanges - need to sell a few things and finish my fox bodies before starting this hands on and updating my build thread in the resto section...