My 2006 350Z blew it's 12k monster stroker (built after Nissan's poorly designed VQ35DE #2 died) Having had enough and after being offered less than it's mods were worth, I got a 1k motor from eBay and traded it in for my X5.

I'd get a cheap motor and sell, trade, etc it.

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BMWCCA # 480346

'72 e6Tii rip
'90 e30iC sold