200 + in Az (or Texas) when its 97F outside is pretty normal....I`d drive it farther to see how the 200 holds....205-210 would be ok too...but not more...I`d first rich it up some...the 190 TStat is fine...

my first question on 400 engine, do you have all the fillers? 1) lower air baffle 2) X fillers 3) Masticated or rubber fillers

the single electric fan , puller or pusher? if pusher , you`re probably blocking more air than getting benefits...i`d get rid of the pusher fan (my car had one when I got it...no benefit,just blockage)as long as youre 40 mph , no fan necessary anyway , just for slow speeds...