Originally Posted by Shawnkey
This post is getting out of control, lets re-group and focus.
The T3/T4 should be fine, and surging shouldn't be a problem. The only hard part of this is going to be exhaust manifolds, and getting them made to fit a single or twin turbos. I don't se what the problem is with the oil feed, and drain is.
That's exactly why a rear mount setup would be so much easier to fabricate and cheaper to install. Leave stock exhaust manifolds, reroute exhaust piping into t3/t4 hybrid, put together cold side piping from turbo to intake and setup an oil return line with an inline oil pump STS turbo style. Add FMU, check with wideband and get rid of any bugs.