78 300d 617 NA replaced by 617 turbo--questions

[ridgerunner]

I've got a 78 300d, NA 617 and I'm installing a 83 300d turbo charged engine into it. I've ran into a issue with the throttle linkage. On the car, there is a cross shaft that the foot throttle lever attaches to on firewall. On the right side of engine, the rod/linkage goes forward from cross shaft to a bracket under intake manifold where another rod attaches and runs up to crank on top of valve cover, then to IP.
Well with the 83 617 engine the throttle hooks up entirely different.
The bracket on firewall that accepts the horizontal shaft on the turbo engine isn't there. I know someone on this forym has did this modification before. I'm capable of fabricating something, or mounting the needed bracket on firewall.
Any and all info is appreciated.