Here is 2 used titanium intake valves. They are 11/32 stem, 2.355 head and 5.705 long. They weigh about 90 grams. They are the square groove type.
2 Used 11/32 X 1.910 X 6.530 Titanium Intake Exhaust MANLEY DEL WEST
Hourglass Lightweight Aluminum Engine Spacer 1/2" I.D. x 1-1/2" O.D. x 1/2" Long
Hourglass Lightweight Aluminum Engine Spacer 1/2" I.D. x 1-1/2" O.D. x 2" Long
JEGS 82051 Line Clamps -8AN (1/2 in.) I.D. 1 1/2 in. L x 1/2 in. W x 11/16 in. H
Hourglass Lightweight Aluminum Engine Spacer 1/2" I.D. x 1-1/2" O.D. x 1" Long
Hourglass Lightweight Aluminum Engine Spacer 1/2" I.D. x 1-1/2" O.D. x 1/4" Wide