How are your EGT's at 364hp with the HE351? That should be really close to the numbers im laying down.
Right now my EGT's get pretty hot on a hard run. I can peg 1500* by 60mph. I really need to advance my timing some, but i dont have my studs in yet. Im not sure how much this turbo will help my EGT's, but I do think this turbo, coupled with advancing my timing about 3* would make a big difference. Id say the timing will be where it is for a little while though, so ill have to see if there is much difference with just the turbo. I am looking forward to a little better spoolup too. My HX40 isnt too bad, but being an auto with 3:55's and a really tight converter, sometimes its just a little too laggy to suit me.
My HX40 is supposed to flow about 60 lbs/min, and this HE351 is rated for 69 lb/min from everything i have seen, so it should definately flow more air. Glad to hear that you really like yours.
Eric