Can you replace a 350 turbo trans with a400turbo?

Yes, you can replace a Turbo 350 transmission with a Turbo 400 transmission, but there are some considerations. The Turbo 400 is larger and heavier, so you may need to modify the transmission crossmember and possibly the driveshaft. Additionally, you'll need to ensure compatibility with your vehicle's engine and adjust the shift linkage. Always consult a professional or detailed guides specific to your vehicle for the best results.