I'm only speaking for myself but I have Boyd's aluminum tanks in my personal Esprit and as Randy noted we have used them in other cars as well. The quality of the tanks is totally professional. Also we have visited their shop and they have a first class operation, and were very attentive to us and good to deal with when it came to design and suggestions for improvement.
Perhaps some one here can chime in on the similarities/differences between G and S cars to see if the tanks are compatible. If they are, problem solved. If not then another alternative is to deliver old G tanks to Boyd's and have them reproduce the new tanks from their own measurements of the original Lotus G tanks. The first time we ordered tanks from Boyd's we delivered a pair of old S tanks for them to use as a model, and we also discussed the changes we wanted to make to the design of the original tanks.
If you took this approach it would add some expense (shipping old tanks to Boyd's) but it may not be prohibitive, especially if you do not want the old tanks returned. Or if you organize a group buy of G tanks, them the cost of supplying them with a "model set" of old tanks could be shared among the whole group.
In any event I think they are an excellent source of tanks - and we don't have any financial ties to them or anything like that. I just admire craftsmanship - and I've got to say that they do the prettiest damn aluminum welding I have ever seen! And what a great thing t have an American source for new Esprit fuel tanks at a reasonable cost.
I used these guys in NJ to fix up the old tank on my '83 RX-7 (nearly impossible to get a replacement tank any more): Gas Tank RENU - USA
Car is still in the shop waiting on a carb replacement, so I haven't actually driven it yet with the new tank.
I used gas tank renu in Albany (quite a few years ago) to repair a leaky tank in a 76 jaguar XJ12 that I had for a short time. Not concours, but very effective! They cut a big hole in the tank, clean it, weld it up and coat the inside and outside so it never leaks again. As I said-very effective!
A new prospective owner looking at this 87 Turbo Esprit.
Not allowed to post URL but if you search for the VIN SCCFC20AXHHF60967 you'll see it easily.
It has 74K miles - when I was looking for my 87 Esprit in 2016, I thought I knew all of them ;-)
But I don't recognize it - wondering if...
I purchased a used valve on Ebay with the correct T hose for the Esprit.
I went to install it this weekend and realized I really dont understand how they work when I started puzzling over the vacuum connection.
After reading up a little bit it dawned on me that the spring pressure holding...
Saw these, I think I have seen folks look for them.
Wrapped up the front end work today, just had to install the rad pod supports, bleed the front brakes.
It starts and runs, going to put on the front and rear trunk covers, and go for the first test drive.