Looking at a converted '76...need some opinions

[911Twnb]

I'm buying my first 911 and came across this ad;

Description- '76 Targa Turbo
All steel wide body with 3.0 ltr non-intercooled turbo engine, 915 trans, Bremtec brakes, C2 mirrors, 3.8 tail, Chrome turbo twist wheels. Car is very fast, own a turbo at half the cost of a original or half the cost of building your own! $13,500.

I spoke with the owner, he's only had the car for 4 months (might be a dealer but he's not saying) and doesn't have a lot of history. Doesn't know when the engine was changed out. Says the wide body is aftermarket but doesn't know much more that that.
Describes the int/ext as 7.5 of 10 with very nice paint.

It's the price range, vintage, model and color I'm looking for and a lot of car for the money if it's right. I'd have a PPI done but am wondering if I should stay away altogether.

Thanks for your opinion.

doesn't have a lot of history. Doesn't know when the engine was changed out. Says the wide body is aftermarket but doesn't know much more that that.

Run away as fast as you can. Remember a PPI is only a 2 hour visual inspection. No way will it uncover all the sins of a life of conversions, motor changes etc. JMO