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I think the VQ37VHR is a great swap. Trying to make over 380whp is going to be a nice challenge. I would say possible, but the juice may not be worth the squeeze. 350-380whp is going to be bananas on an s30 chassis that is dialed in right. I would still jump into doing the swap even if 350whp was only decently achievable.

Welcome back! Looking at your account info, I see the following message: "Account locked from logging in using this IP address until 01/24/25 10:28 AM following 3 unsuccessful login attempts." So we have a couple options. 1) You can try logging in after the requisite wait time. (You may have to use the "Forgot Password" process, if you don't remember your old password.) 2) I can "merge" your old account with your new account; which should give you full access/control of both accounts. I'm not sure, but I think it may default to your new username; but you may also have the option of renaming it to whatever you want. 3) Now that your new account is approved, you can access and view all your old posts & photos....correct? Does that suffice? Let me know how you'd like to proceed. Cheers!

@dprada01 Thanks for the input! Actually, much of this build is inspired and assisted by a fellow builder doing that exact project on his 240/280. I always loved the VQ, and the main goal is to overbuild (Originally, I was looking to attempt the 5XXhp mark and detune to 425*hp) and make a more reliable number as opposed to the constant breaking point. I also recently edited to add, this car will be about 900lbs lighter (3250 --> 2500*), due to it getting the full IMSA/GTO car treatment. Maybe I'll have to shoot a little lower, and hope for the best lol. I feel like I should also clarify, I'm dropping this in a Z31 chassis. The 80's odd child has a special place in my heart.

No doubt it will fit, but feels like a huge milestone. Still posting on youtube weekly and hope to get to installing this driveshaft asap. I was very concerned about the cost of a shaft with a splined mid section, but came out to a very reasonable $647.02. Granted, I guess when you only paid $800 for the engine and $800 for the transmission, that seems like a lot. But this is also one of the main custom pieces not off the shelf available nor that I can make, so I'm happy it wasn't more than $1k.