Just finished ordering up a inline fuel gauge setup from JEGS, about $60 total but should be a nice indoor project while I'm waiting for spring... I've got an inline guage on the 84, the setup was purchased from ebay a few years back.

Mr Gasket 1557 t fuel block
2 Russell 697020, 1/4 NPT to 8mm barb
JEGS 41022 1 1/2" 0-60psi Gauge, 1/8 NPT