Bob hope you dont mind.....
C&P
You will need to swap the sending units to the 87 models. The 87's had TBI and used in-tank pumps. The sending unit part numbers are:
* Dorman p/n 692027 for the driver side, $94 at rockauto.com
* Dorman p/n 692044 for the passenger side, $101 at rockauto.com
I used ACDelco fuel pumps:
* AC Delco EP381 in-tank pumps. $69 at getgmparts.com
And a high pressure tank switch valve:
* Pollak high psi tank selector valve. $83 at JC Whitney, p/n ZX812705U
And be sure to use fuel injection hose, not regular fuel hose. Also use good fuel injection clamps, not the typical worm gear clamps.
I ordered FI rated 5/16" hose for the return lines, and Summit's -6 hose for the pressure side. FI rated clamps on all the tank and valve connections, and Summit's Snap-Tite AN fittings on the Vette filter/regulator and fuel rail.
This is the hose:
Summit SUM-220785 - Summit Racing® Twist-Tite Hose - Overview - SummitRacing.com