Bill;

Beware of statements by people looking to sell you something...it's best to get a reference from a (hopefully happy) customer who isn't his brother-in-law...and if Brickboarders have given you a good review, I expect you are in the ballpark, but when it comes to carbs, there's always some amount of fine tuning required...so I have some trouble believing the statement "right out of the box with no changes".

Sorry, I can't help with a pic of the warm-air induction system...

I expect you are "pulling air from inside the engine compartment" now, in which case it would be pretty cold...and certainly would be if you were to draw it "from behind the front grilles", where it gets zero preheating. For winter, you could maybe get a hold of one of those 140 systems, or otherwise cob something together out of cookie tins and that metalized bellows tubing, taking (preheated) air from the downpipe.

Regarding the PCV, there's no inherent reason not to use a B18 system on a B18, BUT, they are different and they do require a calibrated orifice for flow limiting...if this is not present, it will act as a vacuum leak and maybe indeed be responsible for lean symptoms...refer to: http://www.sw-em.com/pcv_diagrams.htm

Cheers