To clear up some questions. The Carb is a 600cfm Holley that is an off the shelf unit in my opinion,and not a Racing Beat modified unit. It is a 4 barrel. The engine is a 6-port 13B from a series three GSL-SE RX-7,and the intake manifold is a Racing Beat six-port unit.
From the factory these were teh first cars in the US to get the 13B,but it was a 4-port like the similar in many ways REPU that debuted in 74 as well.
Maybe someday I will build a 4-port 13B for this car as I much prefer the 4-port to the 6-port anyway. I would also rather go back to the factory intake,and carb if I can locate them someday,but the Holley works for now even though the proper Racing Beat unit would work better.
This car is by no means perfect,and looks way better in Josh's pics than when you get up close and personal,but it isn't a POS either. If anyone is interested as some have showed so far,everything has a price,and while I don't want to sell it I would for the right amount of money. Nah maybe not!!! I do want to enjoy it next summer before I*make up my mind.