Despite the quick turnaround, Ryan was confident his team will have a race-ready car completed and prepared for Brown's maiden full-time hit out at Sandown.
"Some parts were already in the spare chassis, like the wiring loom and bits and pieces," he said.
"All the parts will be taken out of that and transferred into this chassis, which is identical.
"This was the chassis that Luke Youlden crashed at Bathurst, which we did an overnighter on, ironically.
"For only arriving back at the workshop yesterday, it's already come along really good.
"This could be ready to race this weekend if we really needed to. Luckily we've got a week-and-a-half more.
"It'll be a perfect car, ready to go straight out the gate, and hopefully put it on pole."
The Repco Supercars Championship field will return to Victoria for the Penrite Oil Sandown SuperSprint across March 20-21. Tickets are on sale now.