the TD manifold doesnt allow for the use of a air filter where as the jotech manifold does.. also a larger turbo can be used with the jo manifold.. they are similar in style but look at the 2 middle runners on the manifolds..

jotech mani= runners close together.

tda= runners further apart.

my TDA manifold made great power.. spooled good..and didnt creep.. the welds just didnt last it was crap.


as far as being hand welded it is hand welded by Gato who works in conjunction with jotech now.. alot of shops out source to welders for there manifolds and call them there own.

for example TDautowerkes uses FAB-WORX for alot of stuff but apparently not the 8th gen manifold