Hi, Jim - welcome to EcoModder.
35 in a car rated at 25 is pretty impressive for a non-hypermiler! Congrats.
The manual trans swap is also going to be worth some nice numbers - it gives you way more options in terms of driving technique. I don't really consider engine-off coasting all that hard core (Hmmm, I'm coming to a stop anyway, why should the engine be running?), and a manual makes that so much easier/worry free.
I'd put the
ScanGauge at the top of your list, or build yourself an
mpguino.
And you might be interested in this thread about VG's:
Tested: vortex generators (AirTabs) on a Toyota Corolla
Darin