If you really must go the turbo route, rear mount turbo systems need a reliable system to get oil to and from the turbo<s>. Some setups use a Tilton pump originally designed for rear diff coolers. I think the STS kit uses engine oil pressure to oil the turbo, then a tilton style electric pump to scavenge the oil and return it to the engine through one of the valve covers. Several F-Body folks have done turbo small blocks using the 6 cyl Syclone-Typhoon code and setting the cylinder select byte for 8 cylinders. This gets you features like knock retard, boost control timing and fuel management, etc, but with a considerable learning curve. Another approach might be to find a turbo engine-trans package from a GMC Typhoon or Buick Grand National and use it complete with the factory electronics. Most of the engineering is done, and they make plenty of torque. Much depends on your area(s) of expertise. Stay in your comfort zone and you're likely to have an enjoyable driver. Just my .02.. Cheers,
mv
