My '08 FXT is out of warranty and needs help. Runs out of breath between 5-5500 rpm, looking for turbo suggestions. VF22, VF48 or ?? Liked 68HTA but won't work w/o maj intake mods. TD05 with 7 cm2 will spool quicker than TD05 w/ 8 cm2 nozzle but won't flow w/o choking at high rpm. Does 16g flow enough air or do I need a 18g or 20g. Like mitsu because they can be rebuilt for next to nothing and a IHI can;t be rebuilt. Any feedback on on ZAGE turbos?