I have an existing 32" electric cooktop, hate it and want to replace with a gas unit. My cutout is exactly 31 3/8" x 19", i.e. too small for all 36" cooktops currently sold. One mfg, GE, makes units 33 7/8" cutout width with rectangular sheet metal enclosure below the counter top. I think I may be able to customize the enclosure by reducing it's size if it doesn't interfere with functional components that's can't be relocated. I understand this will not be condoned by manufacturers but no one is making a 32" gas cooktop and there is only one electric 32" unit similar to the one I have installed now. Simply enlarging cutout is not an easy option as the structural members under the stainless steel counter top would be compromised and the existing cutout has an folded over vertical edge which contributes to the counter top strength. Bottom line is which 36" gas cooktop can I modify most easily ? Am trying to get design prints on several different units to determine feasibility