This is a tough subject. If anyone has additional information for this page, do tell.

Parish Plastics:
See Smooth Line.

Perfect Plastics:
See Smooth Line.

Smooth Line: - Web site www.smoothline.com
Currently selling new Parrish Plastics hardtops.
May also service Perfect Plastics hardtops.
Hardtops available for many classic sports cars, including MGA and MGB.
Web site has a (coming soon) section on "Parts/Options".

SnugTop: - Web site www.snugtop.com
This is currently advertising capper tops and accessories for pickup trucks. No mention of hardtops for sports cars.

Martin McGregor of McGregor Rubber in Canada purports to have a seal set available for the snug top.

MacGregor British Car Parts, UK - www.macgregorukcarparts.com