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Message: [QUOTE="KCTurbos, post: 1544767, member: 13852"] Horrible plan IMO... we quit selling the D66 diy kits... they suck. That is a lot of the reason drop in turbos get such a bad name. Especially on a stick shift. This biggest downfall of these turbos is the turbine wheel. The drop in s300 style wheel helps... but a bigger s300 turbine wheel is even better. Putting a huge compressor wheel on the tiny stock turbine wheel is not a great combo. Also... as a lot are saying... with a stick shift truck bigger is not always better. The 366 or 369 t4 kits are going to be kinda laggy. Just like the KC300x 66/73 or KC38r 66/73. None of those options are going to be happy at 1500rpms. I always push stick shift guys into smaller setups because they tend to be happier. The problem with the bigger turbos and a stick is they take time to light... and by the time you shift into the next gear you are starting over again and have to wait for it to light. A 364.5 vs 366, the 364.5 is going to be better in EVERY WAY until you get up over about 3000rpms and then the 366 is going to be better. Ask yourself how much time you spend above 3000rpms to get the advantage of the bigger turbo? If you are worried about lag, towing at lower rpms, spool up, and less smoke from a stop. Then go s364.5 or KC300x 63/73... And NO... none of those options will clean up 238/80s on a max effort tune. But you will be much happier overall IMO from the complete driving experience. We have also tested the kc300x 63/73 back to back with a t4 364.5sxe... Don't wanna start a pissing match but the KC300x is a game changer with these drop in turbos and perform AWESOME... Hit us up with any questions. [email]sales@kcturbos.com[/email] [/QUOTE]