[Bricklin] Door Counterbalance conversions anyone????

[Rick at High Tech Coatings]

Electric linear actuators that can handle the load tend to be 1) slow, 2)
expensive, 3) bulky, 4) high current draw. also Impossible to move without
power. You may be able to rig up some kind of Rube Goldberg wind up deal, but
you will probably need to carry a couple of extra batteries to get the job
done quickly and smoothly
 I have seen it done with 3 nitrogen charged cylinders, 1 in front 2 in the
rear, They were custom made and had fill valves installed to get them balanced
just right. they worked great, but the guy had about a grand in them at the
time, oh and that was 30 plus years ago.  He also added  AMC hornet outer door
handles,