Hi Bob,
On the coil only conversion using factory attaching point, we are limited to a shorter shock, normally the Qa1 #DS /DD 303.
Extended ...12.65
Compressed...9.5
Installed height....approx 11"
On the rack and coil conversion, normally the Qa1 DS /DD 501 is the coil over of choice.
Extended....17.00
Compressed...11.625
Installed height....approx 14"