I have built a few turbo buick engines with and without main girdles. My current full weight Turbo Trans am has gone 93 mph in the 1/8th on stock tires on pump gas with ported stock heads and intercooler, stock crank, rods, and block and it doesn't leak oil or water and gets 26mpg highway. I'd be more than willing to help you out and can take care of getting any machine work needed at affordable prices. I will tear down, inspect, and rebuild an engine (and rebuild the front cover/oil pump) for 500$ and turn around time would be approximately 3 weeks on an engine unless billet caps or a girdle are used. I am located in Lebanon Missouri (about 2 1/2 hours southwest from St. Louis on I-44) Send me a PM if you are interested or have any questions.