wheel cylidner or line or what ?
what do you mean exactly ? what blew exactly ?
if its jsut the line on axle tube from hose block to wheel cylidner then you jsut need side snips or tin snips and small vice grips to remove old line and fittings(will be frozen rusted godo luck using a wrench on them)
then go autozone or whatever and get 3/16" tubing whatever length you need they carry different lengths, get closest length that you need without going under, and bend the line however you nered to to get it connected both ends
wheel cylinder is held to backing plate by two metal screws bolts, on outside backside of backing plate right by where brake line connects into back of wheel cylinder, cant miss them,
dont tear brakes apart, jkust remove the two top long springs and the two round keeper spring caps in center of the shoes then carefully move the tops of the shoes away(spread apart enough to get wheel cylinder out after you unbolt the two screws,
go from there
yo may neeed someone to hold shoes for you while you reinstall cap keepers and bolts and springs
sounds like youll need new shoes and cans or brake cleaner to spray drums and backing plates and springs parts off clean
wheel cylinder may be a tight fit rmeoving and replacing, dont be a wuss, pry it out do whatever you gotta do to get old one out and new one in, yo wont hurt anything but dont pop off the big black rubber dust boot seals on ends of the cylinders! be careful!
use rat tail file and file some around the hole that the cylinder fits in in the backing plate, clean it up after you get old cylinder out it will help you alot in getting the new one to fit in the hole!
otherwise it can be a bitch to get the two mounting bolts to start threading into the backside of the cylinders
with brakes and engine work cleanliness is godliness keep dirt grease fluid anything from touching brake facings and drums, clean them good! and hands too before handling new shoes etc.
if the wheel cylinder blew then its most likel;y because th self adjjusters froze and the shoes quit moving out to drum and it eneded up blowsing the cylinder end seals, so you will want ot remove adjuster and get new one they are cheap, i always use plumbers pipe thread dope on threads and reassemble them, when they are brand new, prevents this problem in the future
good luck