Hello! I use the slightly bigger 3071R. I have a Gr.A-ported head, BD14 and BD10 cams, standard plenum and exhaust manifold, 620cc siemens injectors, cosworth pistons with standard comp, and it is live mapped. I run 2 bar boost and it gives about 430 hp. 1 bar boost at 2800 rpm. I use the standard L8 box. As seen in PF November issue. First swede in PF.