rear coil removal

[mudgutsandglory]

do i need a spring compressor to remove my rear coils?? i was thinking i dont, that i can just jack the frame up until the springs reach the end of their travel, then just support the rear end with jackstands and remove the coils. im not sure and KNOW better than to monkey with coil springs without being sure. when i was in school i watched a coil spring cross a shop and a busy street becaue it wasnt securely in the spring compressor while a strut was being dissasembled.
I will be swapping in a set of springs a buddy of mine gave me, he is restoring his chevelle and ordered new stock springs, but then decided to use station wagon springs instead, so he gave me a brand new pair of springs for free. i figure i may as well try em, of course this will be temporary until i can afford a good kit from Early Classic. right now im just trying to get the truck presentable so i can cruise alittle before the end of summer.
thanks in advance