sorry - I keep getting distracted by other projects but I am now focusing on finishing this as I want to go back to the Ring in October. Went last year and only finished the car the night before!
The engine wasn't fully speced so I have now sold it and I'm looking at stroker sbc short block kits that can hold up to 1000+bhp. I won't make that much power with the procharger DSC1 but I may upgrade that later. I will probably go with an engine kit from Scott Shafiroff in US.
I have been collecting parts in the interim including fuel cell, carbon seats, boot, wing and diffuser, stainless duel exhaust with cut outs and cross over and solid diff mounts from Titan. I also added a wastegate and electronic boost control rather than mess about changing pulley's all the time.
I will update again soon.