[Fiftydriver]

TO all, I am looking to upgrade the performance of my L99 and have settled on three options. My goal is to get into that 550-600 WRHP range but still be able to use the car as an everyday driver, at least in the summer in clear weather!!! LOL

I already have Roto-Fab CAI, Dynatech 1 7/8" LT headers, Dynatech HF cats and Corsa Cat back exhaust with Jannetty tune.

Look over the options and tell me what you would do:

Option 1
Leave engine stock, add on
Magnacharger 2300 kit
Water/meth kit
Protorque 2600 torque converter
Jannetty custom tune
Pros:
-Should get me to that 545-550 WRHP range with great streetability
-Relatively affordable
-No messing with engine
Cons:
-Will my bottom end handle this long term
-No warrantee at all on engine and no back up

Option 2
Pull the L99 and replace it with the LSX376 which is built specifically for forced air systems.
Add same supercharger, same water meth, same TC and Jannetty tune
Pros:
-Could easily get to that 600 WRHP level
-VERY stout bottom end for power level
-More aggressive sound
-Still quite streetable
-2 year/50K warrantee
-Have fresh L99 sitting here as back up if needed
Cons:
-Extra $5500 + cost to pull and install new engine
-Possible issues with engine conversion

Option 3
Pull the L99 and replace with LSX454
F.A.S.T. 102mm intake manifold
Pros:
-Would get me into that 550-575 WRHP range with no supercharger or water/meth.
-No SC cost
-MEAN ASS sounding motor
-2 year warrantee with L99 as backup
Cons:
-Aggressive cam and higher compression makes it less streetable for an everyday driver.
-Fuel milage for an everyday driver???? Not sure what it would be.
-Issues with engine conversion
-Nearly $10,000 in engine cost alone.....

Option 1 would certainly be the most afforable but I am worried about the L99 being able to handle this added stress years down the road. Option 2 maybe the best of both worlds but certainly adds some to the cost and not sure how easy the conversion to the LSX would be for the L99. Sure it would not be a huge problem but little problems tend to add alot of cost to a project.

If I go with option 2 or 3 it will likely be a 3 year project, with the added cost so I am not overly worried about cost as I will just save up until I can afford whatever option would be bet, obviously sooner is better but reality means waiting until I can afford it. I would rather wait three years, make the right choice instead of pushing the L99 harder then it can handle and still needing to get a replacement engine down the road.

Anyway, let me know what you would do or recommend, just looking for opinions from those that have been there and done this!!! Thanks.