I've bought a 2011 LGH and 6L90E from a wrecked ambulance to go in my '69 C-10. I want to make 700 hp or so. I'm wondering if this trans can be built to hold this level and live with lots of ripping around and drag racing occasionally with 12 to 14 inch slicks. This trans would fit so much easier than an Allison . What is the overdrive ratio on this trans? I may have to regroup on this combination and find an LBZ and Allison 6 speed. Thanks