I already asked both MSD and Gerry Knubben. They both say the GT3071 will surge on a standard engine, that's why it would need a proper setup. Besides that James from MSD said the GT3071 would spool about the same as a T34.63. So it's a lot of trouble to go GT3071 and because of my standard gearbox I can't really benefit from the higher power either. That's why I'm back at a T34. But Gerry can't supply a T34 either.