I know full race and ets makes them but who else does? I haven't seen any data and other T4 TS kits.

 

Shearer, Toxicfab, MAP, Jmfab, just to name a few. There is no shortage of quality manifolds for the evo out there. Most have established reputations for standing behind their products. Try to plan your manifold selection around your specific goals. Often deals can be had simply by bundling your purchase with other items at the same time and asking.