Or you could, if you have patience, purchase everything you need for cheaper on the forums. If you put in requests for all the parts you'll need for the topswap.
Gen 3 Supercharger ~$150
Gen 5 Supercharger ~$400
Gen 3 Upper intake Manifold ~$75
Gen 5 Upper intake Manifold ~$150?
L67 or L32 Balancer ~ Not sure, $50?
L67 or L32 Heads ~$200
Tensioners needed ~ Not sure, $30?
Belt needed ~$25
All new Gaskets ~$160
Headers ~$200 (SD Headers Ebay)
Being able to say I did that ~$Priceless
So for about $900 give or take you could do a Gen 3 topswap, unless I left things out.
Or a Gen V setup for about $1105.
Again, prices aren't exact, I am just going off what I've seen parts go for on the forums while glancing over time.
Also consider the tune you will Definitely need. Especially with the higher compression you'll be pushing. You can get a custom tune for the topswap from ZZP, or Will, or maybe even a member on here.
I would probably do the Gen 3 setup because I like to save money ;P and I would cam it while I was that deep in the engine. I recently cammed my L67 and dropped to a 3.4 pulley and its pretty sweet so far. Not as powerful as I thought it would be, but I still am on the stock tune =/
I'm sure someone will chime in with more info soon
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