I have a 1998 firebird and having fuel pump or sensor/sender touble. my mechanic says I have to drop the rearend to change them. Is there an easier way?

if the fuel pump is in the gas tank, then it can be hard to get to- but maybe there is an access port through the trunk floor- pull up the carpet and look for one- one could only hope- make sure the problem is not somethin' else before you start droppin' yer rear end- maybe the mechanic just wants to get in your pants

There is no access port through the trunk floor, but you can make one. I have made 3 of them for my 98 TA, dad's 2000 Firebird and my sisters 96 Firebird. Plenty of tutorials on internet - look for "Trap-door 98 Firebird/Camaro". You need to look for what kind of gas tank you have - metal or plastic, because then the fuel pump location is different. For example https://www.youtube.com/results? search_query=trap-door+98+firebird&sm=3 I made a manual in my native language with pictures. Don't think you'll use it, but anyway http://firebirdclublatvia.lv/2012/11/trap-door-jeb- setas-ieeja/2/