I know a company here in the Chicago area that's been putting Roush motors in SPF's for the last few years. A few have had some "
oil issues" but noting has come back.......shall we say, "broken". Of course, these cars usually don't get a lot of miles put on them in a year, BUT, when they ARE driven, they are usually driven a little "harder" than the family sedan. I drove a buddy's SPF with a Roush 402 and it ran very strong. I must say though that we know a guy who has a custom built 418 built by Eric @ Performance Engineering that runs STRONGER............and it was less money.
If I were you, before I laid down some tall cash on a "crate" engine (albeit, a GOOD crate engine!) I would check around with some of the builders here. Southern, Gessford, Keith Craft, Performance Engineering, etc. I'm sure they would all be glad to crate the engine and ship it to you up there.