Seeking a used or new lock up 27 spline torque converter for a GM 200-4R conversion I'm doing behind my Olds Rocket 350 in a 1970 442 tribute. ~3700lbs, 3.73 posi, 750cfm carb, etc. It's got roughly ~425ft lbs of torque at the crank. (340rw torque) So I need to be sure it will survive and not blow up on me. I've been looking at Dacco's Performance Plus line. But also found these ?? http://www.kmjent.com/cart/product.php?productid=99 Don't need a super high end racing one because I don't race the car. Looking for a budget inexpensive street cruising option but one that isn't a POS. If someone has a spare that's in great condition PM me details.