Ok man here's what I found.

Part number 58646
Compressed Length = 15.16
Extended Length = 24.87
Travel = 9.15
Upper Mount = LS30
Lower Mount = LS38


Part number 58643
Compressed Length = 16.59
Extended Length = 27.55
Travel = 10.66
Upper Mount = LS38
Lower Mount = LS38

Mounts:
LS30:
Sleeve ID = 12MM
Sleeve Length = 1-7/8 (1.875)

LS38:
Sleeve ID = 1/2" (12.7MM)
Sleeve Length = 1-1/2 (1.50)

So it looks like that part number would work... but we'd have to use some washers to make up for the extra 3/8" width missing from the bushing sleeve between the LS30 and LS 38 mounts. I don't think the difference of the 12MM to 12.7MM ID will be an issue. That's only ~.3mm radial clearance... so a turn or two of duct tape would make up for that clearance difference.