Happy Z

Hello everybody, I was wondering if it would be possible and cost effective to swap out the engine in my 1978 280 for a 5.7L L98 engine out of a 1990 iroc-z Camaro? Is this possible? Would it be worth the money it would cost or would buying a new LS1 crate engine be more cost effective? I ask because I need a car for this summer and this Camaro is for sale with 50k miles on it for under 4000$. So i was wondering if I could kill two birds with one stone by getting both a cheap car in good condition and an engine for my Z. Is this a good idea or am I crazy? Thanks in advance for any input you guys have.

Hi guys I've had a hard time finding out what body kit is on this car here : http://motoburg.com/imgs/3516-datsun-240z-01.jpg.html I'm on my ipad so I can't just post a picture, sorry and I hope the link works! But I'm most interested in those killer fender flares, if somebody here could help me find them I'd be much obliged!