I just checked and they are both identical size, the one from the L tank is a 3 sided style top while the square tank one I have is a 6 sided top
Tell you what, these should easily fit into a priority mail flat rate package, how about $6 and I will send you both? This way it will cover the Paypal fees as well
If you want them just send me a PM with your mailing info and I will reply with my Paypal info