Thanks for those Reg!
Should have put the JW Valve body mod in myself! Upgraded mine at the Sydney GTG, well Clay and Brian actually fitted it. Shifting is definitely firmer and sharper! It is an easy low cost mod. To do the upgrade you'll also need approx 20L transmission fluid, a transmission pan gasket, and a transmission filter.

Fuel Bowl Delete the stock fuel system does not purge all the air out of the fuel. The Hutch and Harpoon mods are designed to limit the amount of foamy fuel being picked up in the tank. The FRX is designed to purge air from the heads thus saving unnecessary wear on the injectors. Another alternative to these mods is replacing the stock fuel bowl, which acts like a float chamber on a carby, with a fuel pump and 2 stage filter system. The first filtering stage removes water from the fuel and any tank debris, then post pump there is a finer filter, 2 microns, which filters out the air bubbles. The resultant 'solid' fuel can then be routed via the stock fuel pump to the high pressure fuel pump, thus making it possible to 'delete' the fuel bowl. Added benefits of this mod is that there is NO filter INSIDE the tank, thus removing the need to drop the tank in order to clean or replace the in-tank filter.