Blue Smoke

[FULLPWR]

back in 2007 it didnt pass inspection, in garage waiting for clutch repair, just got back on ground sat. from clutch install.
2006 put in new rc injectors, along with everything under the plenum.
smoke some even after.
2007 t/o bearing went out, cranked it up every week.
2008 huricane ike kick my a$$
2009 ike still kicking my a&&
2010 move new reason to work on Z
today drove it to work 50 miles
changed oil
changed rearend oil
balanced tires
repositioned prop shaft 180 to correct vibration, WORKED
headed back home 50 miles stopped by state inspectioncplace
then sitting on the drums it starts smoking blue like crazy out the pass side tailpipe, goes and comes. failed test
guy told me he could change out the cats ???

i left there confused of the smoke, it has smoke a lil way back so i wasnt to worried.
no ses lights
slight hesitation on acceleration
I pulled out and punched it second & third gear barks pulls hard feel boggy
but doesnt stop.
got home no blue smoke

since it been sitting so long should i have changed the plugs?
i guess at least chk em
fuel- ihave always topped it off to prevent rusting, and just filled up sunday w/93 today topped it off againso fresh gas
no backfire, maybe slight i heard once not enough to blow off a hose

any thoughts on what it may be