barracuda leaf springs

[68SRVIVR]

Want to replace leaf springs on '68 barracuda formula 340-s
(has heavy duty suspension).
Should I go with j.c whitney, pst, ...other?
what would be correct original "stock" look/ht.?

Thanks.

 

[AdamR]

Espo Springs and Things, Stock ride height.

http://espo.com/