Mikuni carburetor 12a install help!!!!!!
 

https://cimg5.ibsrv.net/gimg/www.rx7...4ac8addc71.jpg

https://cimg1.ibsrv.net/gimg/www.rx7...5eda70c5fb.jpg

Let me start off by introducing myself to this forum, My names Tommy and im a rotary head, im 20 years old currently working as a automotive apprentice for Honda. im in need of some help with my RX7 since i have absolutly no idea what im doing with these things. i just picked up a MIKUNI side drafted carburetor from japan, i need help installing it. i can only see one port for the fuel line and i cannot see anywhere to install the return fuel line. also i have a holley fuel pressure regulator with 2 outs and 1 in, how would i install this? is one of the ports a vacume port? also there are alot of ports on this carburetor that i dont think i will be using should i just cap all of these off? ANY INFO WOULD HELP ME ALOT THANK YOU GUYS!!!!just so you guys have some more info i removed the rats nest so im not running any emmisions control on the car. IF SOMEONE CAN SEND ME A INSTALL GUIDE AS TO HOW TO INSTALL THIS MAKUNI CARBURETOR THAT WOULD BE PERFECT

The port on the left of the bottom pic is the vacume and you don't need a return line, mine didn't. If yours has cooler on the bottom there well be a nipple on ether side for running return fuel through but not needed unless you live someplace hot and the fuel cooks.
Should be two nipples on the under side for the oil inputs. https://cimg6.ibsrv.net/gimg/www.rx7...e247ca9a8f.jpg