welcome to the club bro!
i am rollin an 89' S-10 Blazer... same body... got a 4.3 liter fuel injected engine... but no vortec (wasn't around)
getting about 24 MPG on it... and got about 220k miles on it... and it still runs like a charm
also watch out for the A/C and brakes on them... the A/C in my truck has been ****ing up alot... but it's alot older then urs... and the Brakes are sometimes ifish... but they are Def. a fun to drive truck
and for the love of god don't lift it... a lifted 2wd truck is as pointless as spinner hubcaps...
and jim, the only rust on my truck is on the hood... it's starting to bubble and all that good stuff... but in 2 months, it's gonna get a shiney new coat of paint
i will get a pic of mine here shortly...