there were no sports roadsters built in 61 someone has added the tonneau cover etc. to the car. just about any t-bird parts supplier sells the wire roadster wheels. be sure to buy the 54 spoke and not the 48 spoke if you plan to put any miles on the car
the was no true factory installed tach. there was however the dealer installed rotunda tach that i have seen mounted on the center console, these tachs are rare and expensive