Thanks for all the comments - to Simon, the belt drive on the engine is a Roush Yates.
Here's a little bit of an update on the project - it's been going a little slow but I did finish most of the modifications to the front-end of the car. Remember the car is being build to replicate the early gr4 Panteras (from pictures), as they looked when they first hit the track i the spring of 1972.
Here's the front - the huge oilcooler, brake ducts w/scoops cut into the front, modified grill (yes, I cut up a perfectly fine early chrome grill to copy the gr4 look - awesome !!!:-) ), aluminum headlight buckets incl manuel raising mechanism, aluminum hood and just finished copying the blade spoiler in aluminum (need paint).
Pretty time consuming work