I agree on the two return springs. I installed before the engine was here, so it went very smoothly. Depending on how you want to install the mounts to the firewall, it helps to have access behind the dash. The normal thickness firewall is a bit flimsy for the mounts, so many either install to/through the frame tube or reinforce the firewall above the frame tube. I did the second, using a stout piece of aluminum angle riveted to the top of the frame tube behind the dash and backing up to the firewall.