does anyone on here run flowtech headers??

i have a 89GT 5.0 full exhaust BBK shorty headers, custom mid-pipe(H),and flowmasters americanthunder series cat-back.

its been like this for awhile and i was just looking on jegs and saw some cheap long tube headers, is it worth me getting them and doing another custom exhaust since i would have to cuz nothing will match up. i like my set up now and it sounds great and performs well. so is it worth it to go from shorty to long tube?