Overall LSX experiance?

[OldSchoolFormula]

Still debating on whether I want to go through with my LS1 swap and if it will jutify all the work and expense. I use my car as a daily driver, and it runs 13.50's@103 as is, and with the 200R, it gets between 17-19MPG freeway with a q-jet and the 3.08 rear gears. In town it's a measely 10MPG, but some of that can be attributed to my foot, and again the gears. I'm sure if I got a well calibrated q-jet, mileage would go up without impacting performance. Anyway, having a nice smooth running motor would be nice with no wam up issues or the like.. but modifying an LS1 is expensive, even by Pontiac standards. I figure a stock '01 LS1 will give me similar performance to my 400 now, even though it may make a little less power it should make it up in weight. It's just hard to swallow certain things here and there, I mean, tunes? $500?! Virtually everytime I decide to change something? That's...crazy. Installation costs are high as well, even if I do all my own work.



Anyway, this is probabaly a fairly broad question but does anyone have any info regarding mileage, and/or performance with their stock, or nearly stock LS1's with automatics in their swaps? What's your overall feeling after the swap? Do you think the swap may look quite dated in a few years as LT1 and very much more so, TPI'd setups look now? An LS1 would shave a significant amount of weight off the front end of my car, did anyone notice a dramatic handling or braking improvement from the motor alone? I guess I just need a little bit more input to help me venture off into this new, and very UNKNOWN world. I know the car will be a vastly better machine, but I don't know if it truly justifies itself, economically speaking? I mean my current $2000 200R4 didnt justify itself economically either, but it did in the sense that it REALLY transformed the car for the better. How much power will the stock 4L60 withstand before it starts to grenade itself? Did you notice a dramatic decrease in fuel economy after swapping to a "mild" cam, say those low 220ish grinds? Anyway, thanks a lot guy's.