Purchased a 240z with a Sharp intake and 4bbl Holly on it. I'm having problems trying to find a place to attach a throttle return spring without making it looked rigged up. Want to do it right unlike the last owner.

There are lots of throttle return spring setups out there. Holley's have been around for a long time. Go to a speed shop and see what they have. Or search online.

I bought one from a performance parts shop for my Holley. Cheap, effective and easy to instal.