70 dart swinger slant turbo build and mild restoration

http://m.ebay.com/itm/T3-CAST-IRON-...-38MM-WASTEGATE-PORT-/151772439654?nav=SEARCH
bill will that adapter work or should I just build it into the header

The wastegate I use has a 90-degree turn from the main exhaust, like the one in your picture and seems to work fine, but, the instuctional books, now, all say to merge the wastegate supply-pipe with the main exhaust at a shallower angle (well, 45-degrees or less; not 90-degrees,) so, I dunno.... experience tells me that 90-degrees works OK, but the experts say no... :happy1:

Choose your own poison... LOL!