HI R71CUDA! Welcome!
Sounds like a fun car you have there!
As far as the vinyl roof, Like 4Cruzin said, looky on the fender tag. Here's what you might look for:
V1* 69-71 Full Vinyl Top
* Missing digit represents color choices
A- Gunmetal
B- Blue
C- Black Alligator
F - Green
G - Black Gator Grain
H - Green Floral (Mod Top 1969 Dart/Coronet Only)
J - Walnut Pattern (1970 Only)
J - Paisley (1971 Only)
K - Walnut
L - Champagne
L - Parchment
M - Burgundy
P - Yellow Floral (Mod Top 1969 Barracuda Only)
P - Mod Yellow (Mod Top 1970 Barracuda Only)
Q - Blue and Green Floral (Mod Top 1969 Satellite Only)
Q - Mod Blue (Mod Top 1970 Barracuda Only)
T - Tan
W - White
X - Black
Y - Gold and Green Floral (Mod Top 1969 Barracuda Only)
Y - Gold
Y - Tortoise Grain
9 - Special Order (V19=Black on Superbird)