The fuel pressure regulator from Summit Racing, part number MAA-4304MM, the gauge I bought with it was part number SUM-800199. Plug wires were from ebay, Vulcan Extreme 8.5 mm Silicone Universal Race Straight Spark plug Wire Set 8 Cylinder (371047389490), I also put a bigger breather can on it from ebay (360733785808). I run a Fail Safe thermostat from Autozone, part # 7240-192. Something else that helped for the heating issue was I replaced the plastic plate in the bed of the buggy with a peice of expanded metal then added another cooler with electric fan from summit racing (MIO-MMOC-F) and 3/8" hose, this coolers inlet comes from the thermostat bypass on the head, goes to the cooler then to the turbo bearing, from the turbo it goes into the "T" in the cooling system, I replaced the stock "T" with a bigger one I made with fittings from the hardware store because the stock one had a 1/8"-1/4" inlet. This added cooler is piped in with 3/8" hoses, I essentially have 2 radiators. I did this for 2 reasons, one to cool the turbo bearing with oil and water and also to add some capacity to the cooling system, its not a lot but every little bit helps.
In the past I had had some problems of running out of fuel at high RPM, I had Nick from Blox (510)440-1605, rebuild my vacuum operated Fuel Management Unit, that fixed my Fuel problem. Not sure what type your running but mine is a 12:1 ratio. Hope this helps, holler at me if you need anything or if I can help in anyway. Good luck!