Yeah, the only "real, bolt-in" option here is to get the mid-lengths from SCP and have the rest of the exhaust customized to bolt up to them. The alternatives are modifying Mustang long tubes, or being patient - they do come up for sale occasionally here.
97 Laser Red Thunderbird LX161k, Stage 2 4.6L 2v N/A | 300 BHP (255 RWHP, 290 RWTQ) | 13.95 @ 97.58 | Build details | Pics at the Lorain Assembly plant 98 Black Mark VIII 155k, stock daily driver 07 Redfire Fusion V6 SEL 178k, for the wife Gone but not forgotten: 96 Mark VIII, 94 Cougar XR7, 93 Mark VIII
TCCoA's resident pilot since 2014 Once you have tasted flight, you will walk the world with your eyes turned skyward, for there you have been and there you long to return. -Leonardo da Vinci