You can't use a 4g63 turbo engine from the early style, aka 1st generation DSM's, because they use a different mounting configuration. The RVR / Expo LRV / Colt Vista / Summit Wagon and 2nd generation DSM's share the same mounting configuration. One engine mount and three transmission mounts. I was going to get a wrecked 2nd gen eclipse gsx so I could have everything like the ecu, engine harness, downpipe. It has been done, someone on DSMtalk.com did the swap to a fullsize Expo but it wasn't very complicated so it didn't really get a lot of discussion. Do it. I just put a new W4A32 AWD transaxle and transfer case in my LRV so I don't have the money to do the swap. Good Luck.
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http://216.162.194.228/pics/w4a32.jpg)