I've got two heavy duty now after experiencing slow sagging of the hatch
after only a year with the one weaker than the other configuration.  You
haven't experienced pain until you have walked into the edge of the
hatch that you didn't notice had dropped down six inches since you
walked under it the last time!
--
Stuart MacMillan
Seattle

'84 Vanagon Westfalia w/2.1
'65 MGB (Daily driver since 1969)
'74 MGB GT (Restoring sloooowly)

Personal mechanic for:
'70 MGB GT (Daughter's)

Assisting on Restoration (and spending OPM):
'72 MGB GT (Was daughter's, now son's)
'64 MGB (Son's)

Stripped and gone but their parts live on:
'68 MGB, '73 MGB, '67 MGB GT