You are wrong. Car would have still picked up ~25hp regardless of fuel. Smaller monos do just fine for daily status. The 3.6 is almost obsolete now with the new Gen 3/3R making 1100+.
Already have had and sold a gen III, I had one of the first ones in the wild. The TB cluster**** turned me off from VMP. KB 3.6s make ~1100 all day long and come with a TB that works. YMMV.