Why are you iffy about how your engine was stolen, and whats the story behind it getting stolen from a collision shop?
As much as I'm all for you catching the scumbag theives, this sounds like a job for either the shop's insurance or your own.
If the engine was modded I hope you still have reciepts so you can be properly compensated.
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2004 S60R - 350+ HP, AWD, Custom FMIC & Exhaust, Active Suspension & A Big Set Of Brembos
Crazy Camber, Stretch & Poke; its the new triple-stack-bleacher-wing ricer fad that's all the rage nowadays, lol